hard believe (adjective) questionable: doubtful, uncertain
Detalii: questionable means open to doubt, disagreement, or challenge - or of dubious morality, honesty, or respectability; questioning (adjective) means showing curiosity or inquiring about - or (noun) an inquiry or interrogation
Sinonime: baseness, cheapness, frivolousness, inconsequence, inconsiderableness, irrelevance, measliness, negligibility, negligible, negligibleness, paltriness, shabbiness, smallness, subordination, trifle, trivialness, unimportance
Antonime: certain,
definite, indisputable, proven,
sure, undoubted, unquestionable